VT-MSPA2-1-1X/V0/0

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth VT-MSPA2-1-1X/V0/0 (R901010980) is a sophisticated amplifier module designed for precise control of proportional valves in hydraulic systems. This module features a characteristic curve generator that allows for separate adjustment of step levels and maximum values for positive and negative signals, ensuring tailored response to hydraulic demands with a linear development through the zero point. The amplitude limiter restricts the internal command value to within the nominal range, while the current controller monitors solenoid current, comparing it with the control output to compensate for any discrepancies. Equipped with a current output stage that generates clocked solenoid current, this module ensures short-circuit-proof outputs which are deenergized in case of internal faults or absence of an enable signal. A clock generator is incorporated to adjust the frequency based on command value and operating voltage. Additionally, fault recognition capabilities safeguard against cable breaks and overcurrent conditions in the output stage. Designed for ease of installation, this amplifier module can be snapped onto top hat rails and connected via screw terminals. It operates on 24V direct voltage and includes a power supply unit with a making current limiter to prevent high peaks during activation. Command value presetting is calculated from external command value signals and zero point offset, controlling solenoid currents that regulate valve flow direction. An enable function with LED indication on the front plate activates power output stages and forwards internal command values to the ramp generator without abrupt valve openings. The ramp generator itself limits incline changes in control output without affecting ramp time set by downstream functions. This module also features differential input for voltage adjustment, separately adjustable up/down ramp times for precision control, adjustable zero point and sensitivity settings, clocked power output stage for efficient energy use, LED displays indicating various operational states, as well as reverse polarity protection ensuring system safety during operation.